What kind of carrying back pack does one recommend?
Realistically, most adults couldn’t carry a fully backed backpack as far as the corner. Better to start with a school sized backpack left over from last school year.
Odds are you’ll be bugging in rather than out so prep your home first.
Depending on what you are considering spending, maybe a Kelty. Their MAP is a good pack and well built without the "tacticool" look. I'd avoid the Molle, and stay away from black. Black just doesn't blend in.
“What kind of carrying back pack does one recommend?”
Whatever you can afford. If money isn’t an issue, Dana has been making the best packs in the world for decades now. His latest business incarnation is called Mystery Ranch. I talked with him at the SHOT Show a few years ago and urged him to make packs designed for military applications. Evidently enough people made the same request, because he now does. Best made packs, bar none.